Near Seattle, Washington, the navy presents its newest Amphibious Behemoth - a 20,000 pound monster. Resourceful enough to carry the heaviest field equipment ashore. The LVTUX2 Landing Vehicle Tract Utility Experimental Model - 2. A huge monstrous Duck amphibious thing. MS - With naval personal aboard the Amphibious Behemoth makes it way into the water. MS - Naval personal aboard the thing is making its way through the water. MCUS - It lands on the other side of the water and drops it back gate and a big rolling tank makes its way out. MS - The LVTUX2 spewing out water from its bilge pumps, a lot of water.